TW201237455A - Image capturing optical lens system - Google Patents

Abstract

An image capturing optical lens system includes, in order from an object side to an image side, the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with positive refractive power has a convex image-side surface. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface which are aspheric. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface which are aspheric, wherein the image-side surface of the fifth lens element has at least one inflection point. When the image capturing optical lens system satisfies specific conditions, the total track length and spherical aberration of the image capturing optical lens system can be reduced.

Description

201237455 VI. Description of the Invention: [Technical Field] The present invention relates to a pickup optical lens system, and particularly to a miniaturized optical lens system and three-dimensional (3D) applied to an electronic product. A pick-up optical lens system for image extension applications. [Prior Art] In recent years, with the rise of portable electronic products having photographic functions, the demand for optical systems has been increasing. Generally, the photosensitive element of the optical system is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor), and with the advancement of semiconductor process technology, As the size of the pixel of the photosensitive element is reduced, the optical system is gradually developed in the field of sorghum, and therefore, the requirements for image quality are increasing. An optical system conventionally mounted on a portable electronic product, as shown in U.S. Patent No. 7,869,142, is mainly a four-piece lens structure, but is high in smart phones and PDAs (Personal Digital Assistant). The prevalence of mobile devices has driven the optical system to rapidly increase in quality and imaging quality, and the conventional optical system will not be able to satisfy the more advanced photographic systems. Although there is a further development of a five-piece optical system, as disclosed in U.S. Patent No. 8,000,030, an optical system having five lenses can improve the image quality, but the refractive power design of the fourth lens and the fifth lens cannot be improved. Effectively shortening the focal length after the optical system makes the total length difficult to shorten, which hinders the application of the small 201237455 type electronic products. SUMMARY OF THE INVENTION Accordingly, it is an aspect of the present invention to provide a pickup optical lens system in which a fourth lens and a fifth lens are simultaneously provided with a lens having a negative refractive power, which can make the main point of the optical lens system effective. Keep away from the imaging surface to shorten the back focal length, which can shorten the total length of the optical lens system and achieve the goal of miniaturization. In addition, the third lens of the optical pickup lens system can effectively disperse the positive refractive power distribution of the first lens to avoid excessive spherical aberration due to excessive deflection of the single lens. According to an embodiment of the present invention, an optical pickup lens system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in sequence from the object side to the image side. The first lens has a positive refractive power and its object side surface is convex. The second lens has a refractive power. The third lens has a positive refractive power and its image side surface is convex. The fourth lens has a negative refractive power, and the object side surface is a concave surface, the image side surface is a convex surface, and both are aspherical surfaces. The fifth lens has a negative refractive power, the object side surface is a convex surface, the image side surface is a concave surface, and both are aspherical surfaces, and the image side surface of the fifth lens has at least one inflection point. The focal length of the first lens is fi, the focal length of the third lens is 〇, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the optical lens system of the pickup lens is f, and the curvature of the object side surface of the second lens The radius is R3, which satisfies the following conditions: 0 &lt; D/fl &lt;0.57; 0 &lt; f4/f5 &lt;1.50; and -0.5 &lt; f/R3 &lt; 3.5. According to another embodiment of the present invention, an optical pickup lens system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from the object side to the image side. . The first lens has a positive refractive power and its object side surface is convex. The second lens has a refractive power. The third lens has a positive refractive power and its image side surface is convex. The fourth lens has a negative refractive power, and the object side surface is a concave surface, the image side surface is a convex surface, and both are aspherical surfaces. The fifth lens has a negative refractive power, the object side surface is a convex surface, the image side surface is a concave surface, and both are aspherical surfaces, and the image side surface of the fifth lens has at least one inflection point. The focal length of the first lens is fi, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the radius of curvature of the image side surface of the third lens is R6, the object side of the fourth lens The radius of curvature of the surface is R7, which satisfies the following conditions: 0 &lt; f3/fl &lt;0.57; 0 &lt; f4/f5 &lt;1.50; and 0 &lt; R7/R6 &lt; 0.90. When f3/fl satisfies the above conditions, the positive refractive power of the first lens and the third lens can be appropriately distributed, and excessive refractive error of the single lens can be avoided to cause excessive spherical aberration. When f4/f5 satisfies the above conditions, the negative refractive power of the fourth lens and the fifth lens are appropriately allocated, so that the main point of the optical lens system can be moved away from the imaging surface, so as to shorten the back focal length, and the mirror configuration can be further improved. To be close. When f/R3 satisfies the above conditions, the curvature of the surface of the second lens object side can be appropriately distributed to help correct the aberration of the pickup optical lens system. When R7/R6 satisfies the above conditions, the curvature of the third lens image side surface and the fourth lens object side surface can be appropriately adjusted, which helps to reduce the sensitivity and aberration of the pickup optics 201237455 chip system, and further enhances the image pickup. The resolution of the optical lens system. [Embodiment] A pickup optical lens system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in this order from the object side to the image side. The first lens has a positive refractive power, and the object side surface is a convex surface, and the image side surface may be a concave surface, whereby the positive refractive power of the first lens can be appropriately adjusted to help shorten the total length of the pickup optical lens system. The object side surface of the first lens may be a convex surface, and the image side surface may be a concave surface, thereby helping to correct the astigmatism of the pickup optical lens system. The image side surface of the second lens is convexly convex from the optical axis toward the periphery, whereby the angle of the off-axis field of view light incident on the image sensing element can be effectively suppressed, and the image of the off-axis field of view can be further corrected. difference. The third lens may have a positive refractive power effective to disperse the positive refractive power distribution of the first lens to avoid excessive spherical aberration due to excessive deflection of the single lens. The image side surface of the third lens may be convex. The positive refractive power configuration of the optical lens system can be properly adjusted and balanced to help reduce the sensitivity of the optical lens system. The fourth lens has a negative refractive power, which helps the main point of the optical lens system to be away from the imaging surface to facilitate shortening the back focal length thereof, and the object side surface is concave and the image side surface is convex, which can effectively correct the optical lens system. The astigmatism. The fifth lens has a negative refractive power, and the object side surface is convex, and the image side surface is four sides' which can cooperate with the negative refractive power of the fourth lens, so that the main point of the optical lens system is effectively away from the imaging surface to strengthen and shorten The rear focal length, 201237455, in turn reduces the total length of the optical lens system and achieves the goal of miniaturization. In addition, the object side surface of the fifth lens is convexly concave from the optical axis toward the periphery, and the image side surface has an inflection point, thereby effectively suppressing the light of the off-axis field of view from being incident on the image sensing element. The angle further corrects the aberration of the off-axis field of view. The focal length of the first lens is Π, and the focal length of the third lens is f3, which satisfies the following condition: 0 &lt; f3/fl &lt; 0.57. By appropriately distributing the positive refractive power of the first lens and the third lens, it is possible to avoid excessive spherical aberration due to excessive bending force of the single lens. The pickup optical lens system can satisfy the following conditions: 〇 &lt;f3/fl &lt; 0.45. Further, the following conditions can be satisfied: 〇 &lt; β / η &lt; 〇 35. The focal length of the fourth lens is f4'. The focal length of the fifth lens is f5, which satisfies the following condition: 0 &lt; f4/f5 &lt; 1.50. Appropriately assigning the negative refractive power of the fourth lens and the fifth lens, the main point of the optical lens system can be moved away from the imaging surface, so as to shorten the rear focal length and make the lens assembly more compact. The pickup optical lens system can satisfy the following conditions: 〇 &lt;f4/f5 &lt;0.7〇. The focal length of the optical lens system is f, and the radius of curvature of the object side surface of the second lens is R3, which satisfies the following condition: _〇 5x f/R3 &lt; 35. Thereby, the curvature of the second lens object side surface is appropriately distributed to help correct the aberration of the pickup optical lens system. The image side surface of the second lens has a radius of curvature of R6, and the object side surface of the fourth lens has a radius of curvature of R7' which satisfies the following condition: g &lt; R7 / r6 &lt; 〇 9 〇. Thereby, the curvature of the third lens image side surface and the fourth lens object side surface is appropriately adjusted to help reduce the sensitivity and aberration of the pickup optical lens system, and further improve the resolution of the pickup optical lens system. The sum of the thicknesses of the first lens to the fifth lens on the optical axis is 201237455 Σ στ, and the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is Td ', which satisfies the following condition: 7〇&lt; SCT/Td &lt; 〇9〇. Thereby, the configuration of the lens thickness contributes to shortening the total length of the pickup optical lens system and promoting its miniaturization. The pickup optical lens system can satisfy the following conditions: 0.75 &lt; SCT/Td &lt; 0.85. The radius of curvature of the object side surface of the fifth lens is r9, and the focal length of the pickup optical lens system is f' which satisfies the following condition: 〇2〇&lt;119/£&lt;〇6〇. Thereby, the petzval sum of the pickup optical lens system can be corrected, the peripheral image plane becomes flatter, and the resolution is further improved, and the effect of correcting the aberration can be obtained. The focal length of the optical lens system is f, and the entrance pupil diameter of the optical lens system is EPD, which satisfies the following condition: 丨 2 < f / EpD $ 2 2 . Therefore, the optical lens system has a large aperture characteristic with sufficient incident light amount, which can improve the response efficiency of the photosensitive element, and can also achieve better image quality in a low-light environment, and has a shallow depth of field to highlight the subject effect. The radius of curvature of the object side surface of the fourth lens is R7, the curvature of the image side surface is half controlled horse R8, the radius of curvature of the object side surface of the fifth lens is R9, and the radius of curvature of the image side surface is R10, which satisfies the following condition: 〇2〇&lt;; |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+R10)| &lt;ο.&quot;. By appropriately distributing the curvatures of the fourth lens and the fifth lens surface to make the negative refractive power more suitable, the total length of the optical pickup lens system can be effectively shortened. The second lens has a dispersion coefficient of V2, and the fourth lens has a dispersion coefficient of V4, which satisfies the following condition: 20 &lt; (V2 + V4)/2 &lt; Thereby, it helps to correct the chromatic aberration of the optical lens system. The focal length of the optical lens system is f, the focal length of the first lens is fl, 201237455, the focal length of the third lens is Ο, and the focal length of the fifth lens is f5, which satisfies the following condition: 0.20 &lt; (f/fl-f/ F5) / (f / f3) &lt; 0.75. By appropriately distributing the positive refractive power of the first lens and the third lens, it is possible to avoid excessive single-lens bending force and excessive spherical aberration, and to configure an appropriate fifth lens refractive power and correct aberration of the optical lens system. On the side surface of the fifth lens image, except for the intersection with the optical axis, all sides of the vertical optical axis of the image side surface, all points of the tangent plane and the image side surface, the vertical distance between the tangent point and the optical axis is Yc52, and the third lens is in the light. The thickness on the shaft is CT3, which satisfies the following condition: 1.0 &lt; Yc52/CT3 &lt; 3.5. Thereby, the angle of the off-axis field of view light incident on the image sensing element can be effectively suppressed, the response efficiency of the photosensitive element is improved, the imaging quality is increased, and the aberration of the off-axis field of view can be further corrected. The object side surface of the third lens has a radius of curvature R5, and the image side surface has a radius of curvature of R6, which satisfies the following condition: &.3 &lt; (R5 + R6) / (R5 - R6) &lt; 1.3. Thereby, the positive refractive power of the third lens is appropriately adjusted to effectively distribute the positive refractive power of the first lens to avoid excessive spherical aberration. The thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, which satisfies the following condition: 0.8 &lt; CT5/CT4 &lt; 1.8. Thereby, the thickness of the fourth lens and the fifth lens contributes to the manufacture of the lens and the assembly of the optical lens system. The distance between the first lens and the second lens on the optical axis is T12, and the thickness of the second lens on the optical axis is CT2, which satisfies the following condition: 〇 &lt; T12/CT2 &lt; 1.0. Thereby, the distance between the lenses and the thickness of the lens are appropriately adjusted to facilitate the assembly of the pickup optical lens system and to maintain the miniaturization of the optical pickup lens system. 10 201237455 In the optical pickup lens system of the present invention, the material of the lens may be plastic or glass. When the lens material is plastic, it can effectively reduce the production cost. In addition, when the lens is made of glass, the degree of freedom of the refractive power configuration of the optical lens system can be increased. In addition, an aspherical surface can be disposed on the surface of the lens, and the aspherical surface can be easily formed into a shape other than the spherical surface, and more control variables are obtained to reduce the aberration, thereby reducing the number of lenses used, thereby effectively reducing the image pickup of the present invention. The total length of the optical lens system. In the optical pickup lens system of the present invention, if the surface of the lens is convex, it is indicated that the surface of the lens is convex at the paraxial; if the surface of the lens is concave, it indicates that the surface of the lens is concave at the paraxial. In the image pickup optical lens system of the present invention, at least n may be disposed at a position before the first lens, and after each of the second and second lenses, the type of the aperture such as a flare (6) (10) St〇p) Or FieldStGp, etc., to reduce stray light and help improve image quality. In the optical pickup lens system of the present invention, the aperture can be disposed between the subject and the first lens (i.e., the aperture) or between the lens and the imaging surface (i.e., the center aperture). If the aperture is a front aperture, the exit pupil Pu Pupu of the optical lens system can be made longer distance from the imaging surface, so that it has a far distance.

The heart (TdeCentriC) effect can increase the efficiency of the image sensing component CCD or CM0S to receive images; if it is the centerlighting®, it helps to expand the field of view of the optical lens system, so that the optical lens system has a wide-angle lens. The advantage. Specific embodiments will be described below in conjunction with the drawings and will be described in detail based on the embodiments described above. &lt;First Embodiment&gt; 201237455 Please refer to FIG. 1 and FIG. 2, wherein FIG. 1 is a schematic view of a pickup optical lens system according to a first embodiment of the present invention, and FIG. 2 is left to right. The spherical aberration, astigmatism, and distortion curves of the optical pickup lens system of the first embodiment are shown. As can be seen from FIG. 1, the optical pickup lens system of the first embodiment sequentially includes the first lens 110, the aperture 100, the second lens 120, the third lens 13A, and the fourth lens 14 from the object side to the image side. The fifth lens 15 〇, the infrared ray eliminator (IR Filter) 17 〇 and the imaging surface 160. The first lens 110 has a positive refractive power, and the object side surface i is a convex surface, the image side surface 112 is a concave surface, and both are aspherical surfaces, and the first lens 11 is made of a plastic material. The first lens 120 has a negative refractive power, the object side surface 121 is a convex surface, the image side surface 122 is a concave surface, and the image side surface 122 of the first lens 120 is from the J axis toward the periphery. 'From concave to convex. The second lens 12 is made of plastic material. The surface 122 is aspherical, and the second lens (10) has a positive refractive power, and the object side surface 131 and the image side porpoise material 32 are convex and are non-faceted, and the third lens 130 is a figurative j. The four lens (10) has a negative refractive power, and the object side surface (4) is a concave surface and a plastic material f. The white lens is aspherical, and the fourth lens 140 has a negative refractive power such as a five-lens lens 15Q, the object side surface 151 is convex, the surface 152 is concave*, and the object side surface i5i of the fifth lens 15 is From the side toward the periphery, from the convex surface to the four sides, the image 152 of the fifth lens 150 has an inflection point. The object side surface ΐ5ΐ and 12 of the fifth lens 15〇 are 2012 201255, and the image side surface 152 is aspherical, and the fifth lens 15 is made of a plastic material. The material of the infrared filter filter 17 is glass, which is disposed between the fifth lens 150 and the imaging surface 16A, and does not affect the focal length of the optical lens system. The aspherical curve equation of each of the above lenses is expressed as follows: X(7)=(r2/i〇/(u 命,(1  (1+φ (17〇)+ 〇 4/)x(r); where: ' X : the relative distance of the point on the aspheric surface from the optical axis to Y, and the vertex of the vertex on the optical axis tangent to the aspheric surface; Y: the distance between the point on the aspheric curve and the optical axis; R: radius of curvature; k : Cone coefficient;

Ai : the i-th order aspheric coefficient. In the pickup optical lens system of the first embodiment, the focal length of the optical lens system is f, the aperture value (f-number) of the optical lens system is Fno, and half of the maximum angle of view in the optical lens system is HFOV. , the values are as follows: f = 2.18 mm; Fno = 2.00; and HFOV = 34.2 degrees. In the pickup optical lens system of the first embodiment, the second lens 120 has a dispersion coefficient of V2, and the fourth lens 140 has a dispersion coefficient of V4 which satisfies the following condition: (V2+V4)/2 = 23.30. In the optical pickup lens system of the first embodiment, the distance between the first lens 11 〇 and the second lens 120 on the optical axis is T12, and the thickness of the second lens 12 on the optical axis is CT 2 'the fourth lens 140 On the optical axis of the thick CT4, the thickness of the fifth lens 150 on the optical axis is CT5, which satisfies the $column 201237455 condition: T12/CT2 = 0.71; and CT5/CT4 = 1.47 ° the pick-up optics of the first embodiment In the lens system, the sum of the thicknesses of the first lens 110 to the fifth lens 150 on the optical axis respectively is Σ (: Τ 'the object side surface 111 of the first lens 110 to the image side surface 152 of the fifth lens 150 is on the optical axis The upper distance is Td, which satisfies the following condition: ZCT/Td = 0.77. In the pickup optical lens system of the first embodiment, the focal length of the optical lens system of the pickup lens is f, and the radius of curvature of the object side surface 121 of the second lens 120 R3, which satisfies the following condition: f/R3 = 1.49. In the pickup optical lens system of the first embodiment, the object side surface 131 of the third lens 130 has a radius of curvature R5, and the image side surface 132 has a radius of curvature of R6' The object side surface 141 of the four lens 140 has a radius of curvature of R7, which satisfies the following (R5+R6)/(R5-R6) = 0.84; and R7/R6 = 0.58. In the pickup optical lens system of the first embodiment, the object side surface 141 of the fourth lens 140 has a radius of curvature of R7 and an image side. The radius of curvature of the surface 142 is R8'. The radius of curvature of the object side surface 151 of the fifth lens 150 is R9, and the radius of curvature of the image side surface 152 is R10, which satisfies the following conditions: |(R7-R8)/(R7+R8)|+| (R9-R10) / (R9 + R10) Bra 0.34. In the pickup optical lens system of the first embodiment, the object side surface 151 of the fifth lens 150 has a radius of curvature of R9, and the focal length of the optical lens system of the pickup is f. It satisfies the following condition: R9/f=0.38. In the pickup optical lens system of the first embodiment, the focal length of the first lens 110 is fl 'the focal length of the third lens 130 is f3, and the focal length of the fourth lens 140 is F4, the focal length of the fifth lens 150 is f5, and the focal length of the optical lens system of the pickup is f' which satisfies the following conditions: Ο/fl = 0.31; f4/f5 = 0.19; and (f/fl-f/f5)/( f/f3) = 0.38. 14 201237455 In the pickup optical lens system of the first embodiment, the focal length of the optical lens system is f, and the entrance pupil diameter of the optical lens system is EP. D' which satisfies the following condition: f/EPD = 2.00. Referring to Fig. 19, there is shown a schematic diagram of Yc52 of the fifth lens 150 according to the embodiment of Fig. 1. As can be seen from Fig. 19, the image side surface of the fifth lens 150 152, except for the intersection with the optical axis, the image side surface 152 is perpendicular to the optical axis, the cut surface and the image side surface 152, the vertical distance between the tangent point and the optical axis is Yc52, and the third lens 130 is on the optical axis. The thickness is CT3, which satisfies the following condition: Yc52/CT3 = 1.58. Refer to Table 1 and Table 2 below for reference. Table 1, the first embodiment of the instrument distance, = 2.18! 11111 ^ 11 〇 (aperture value) = 2.00, 1 ^ (&gt; \ / | rich angle of view) = 34.2 疳 surface curvature radius thickness material refractive index dispersion coefficient focal length 0 The object plane is infinite 1 First lens 1.609 (ASP) 0.340 Plastic 1.544 55.9 4.24 2 4.912 (ASP) 0.013 3 Aperture plane 0.164 4 Second lens 1.457 (ASP) 0.250 Plastic 1.640 23.3 -7.89 5 1.055 (ASP) 0.162 6 Three lenses 8.802 (ASP) 0.616 Plastic 1.544 55.9 1.32 7 -0.760 (ASP) 0.126 8 Fourth lens -0.439 (ASP) 0.257 Plastic 1.640 23.3 -3.42 9 -0.675 (ASP) 0.094 10 Fifth lens 0.830 (ASP) 0.379 Plastic 1.544 55.9 -18.07 11 0.642 (ASP) 0.500 12 Infrared filter filter plane 0.200 Glass 1.517 64.2 13 Plane 0.245 14 | Imaging plane - Reference wavelength (d-Hne) is 587·6ηπι 15 201237455 Table 2, aspherical coefficient Surface 1 2 4 5 6 k- -1.2875E+00 -2.0000E+01 -1.2559E+01 -3.2004E+00 2.9860E+00 A4 = -5.4269E-02 -5.6424E-01 -7.4566E-01 - 7.4379E-01 -1.6656E-01 A6 = 3.0281E-01 7.1024E-01 -4.2476E-01 2.0183E-01 -2.0992E-01 A8 = -1.9318E+00 3.2871E-03 2.5973E+00 8.0073E-01 -8.8117E-01 A10 = 4.7118E+00 -5.1675 E+00 -5.2031E+00 -1.1447E+00 1.9848E+00 A12 = -6.0687E+00 6.6674E+00 9.2935E-01 -2.3008E+00 2.8112E+00 A14 = 8.5520E-02 -1.2268E -01 7.8495E-02 1.0604E+00 -7.903 8E+00 A16 = -1.8180E+00 Surface 7 8 9 10 11 k = -5.9868E-01 -2.3557E+00 -8.6486E-01 -6.0725E+00 -3.7544E+00 A4 = 5.4469E-02 -2.2674E-01 5.8943E-01 -2.9264E-01 -2.1640E-01 A6 = 1.4914E-01 -1.2666E-01 -6.2547E-01 -3.4205E- 03 6.8169E-02 A8 = -4.1067E-01 1.0797E+00 2.8591E-01 -2.6242E-04 -2.4778E-02 A10 = -7.4268E-02 -2.0186E+00 2.2271E-01 4.5147E-02 9.3929E-03 A12 = 1.9487E+00 7.0654E-01 -1.8452E-01 -8.6502E-03 -5.6000E-03 A14 = -1.7428E+00 2.0299E+00 -1.0034E-01 3.8728E-03 2.2867 E-03 A16 = -1.1290E+00 2.3705E-01 -1.4254E-03 Table 1 is the detailed structural data of the first embodiment of Fig. 1, in which the unit of curvature radius, thickness and focal length is mm, and the surface is 0- 14 sequentially represents the table from the object side to the image side . Table 2 shows the aspherical data in the first embodiment, in which the taper coefficients in the equation of the aspherical curve of k, and A1-A16 represent the aspherical coefficients of the first to the 16th of each surface. In addition, the tables of the following embodiments correspond to the schematic diagrams and aberration diagrams of the respective embodiments, and the definitions of the data in the tables are the same as those of Tables 1 and 2 of the first embodiment', and are not described herein. &lt;Second Embodiment&gt; Referring to Figures 3 and 4, FIG. 3 is a schematic view showing a pickup optical lens system according to a second embodiment of the present invention, and FIG. 4 is sequentially arranged from left to right. It is the spherical aberration of the pickup optical lens system of the second embodiment, the image of 2012 20123755, and the distortion curve. As can be seen from FIG. 3, the pickup optical lens system of the second embodiment sequentially includes the first lens 210, the aperture 200, the second lens 220, the third lens 230, the fourth lens 240, and the fifth from the object side to the image side. The lens 250, the infrared filter filter, and the imaging surface 260. The first lens 210 has a positive refractive power. The object side surface 211 is a convex surface, the image side surface 212 is a concave surface, and both are aspherical surfaces, and the first lens 21 is made of a plastic material. The second lens 220 has a negative refractive power, and the object side surface 221 is a convex surface, the image side surface 222 is a concave surface ', and the image side surface 222 of the second lens 220 is turned from a concave surface to a convex surface from the near optical axis toward the periphery. The object side surface 221 and the image side surface 222 of the second lens 220 are all aspherical, and the second lens 220 is made of a plastic material. The second lens 230 has a positive refractive power 'the object side surface 231 is a concave surface, the image side surface 232 is a convex surface' and is aspherical, and the third lens 230 is made of a plastic material. The fourth lens 240 has a negative refractive power, and the object side surface 241 is a concave surface, the image side surface 242 is a convex surface, and both are aspherical surfaces, and the fourth lens .240 is made of a plastic material. The fifth lens 250 has a negative refractive power, the object side surface 251 is a convex surface, the image side surface 252 is a concave surface, and the object side surface 251 of the fifth lens 250 is turned from the convex axis to the periphery from the near optical axis, and the convex surface is concave. The image side surface 252 of the five lens 250 has an inflection point. The object side surface 251 and the image side surface 252 of the fifth lens 250 are all aspherical, and the fifth lens 250 is made of a plastic material. The material of the infrared filter 270 is glass, which is disposed between the fifth lens 250 and the imaging surface 260, and does not affect the focal length of the optical lens system 17 201237455. Please refer to Table 3 and Table 4 below. Table 3, the second embodiment f(隽SP) = 2.00mm, Fno (aperture value) = 1.95, HFOVT (from HFOVT) = 366 surface curvature radius thickness material refractive index dispersion coefficient focal length 0 object plane infinite 1 Selective mirror 1.946 (ASP) 0.319 Plastic 1.544 55.9 4.94 2 6.644 (ASP) 0.011 3 Aperture plane 0.138 4 Second lens 1.300 (ASP) 0.220 Plastic 1.650 21.4 -37.37 5 1.152 (ASP) 0.177 6 Third lens -36.557 (ASP 0.697 Plastic 1.544 55.9 1.19 7 -0.638 (ASP) 0.081 8 Fourth lens -0.433 (ASP) 0.240 Plastic 1.650 21.4 -3.17 9 -0.667 (ASP) 0.152 10 Fifth lens 0.710 (ASP) 0.314 Plastic 1.544 55.9 -8.57 11 0.520 (ASP) 0.500 12 Infrared filtering light film plane 0.200 Glass 1.517 64.2 - 13 Plane 0.196 14 Imaging plane - Reference wavelength (d-line) is 587.6 nm Table IV, aspherical surface 1 2 4 5 6 k = -1.7405E+00 -1.5937E+01 -1.0439E+01 -2.8899E+00 -2.0000E+01 A4 = -6.5780E-02 -6.7099E-01 -6.8261E-01 -7.5765E-01 -1.8278E -01 A6 = 2.8078E-01 1.2000E+00 -5.5 212E-01 -8.4276E-02 -2.4017E-01 A8 = -1.8591E+00 -1.6537E+00 1.6380E+00 7.7690E-01 -1.0705E+00 A10 = 4.2533E+00 -3.2367E+00 - 3.9696E+00 -3.3446E-02 2.8154E+00 A12 = -6.0522E+00 6.5976E+00 1.0850E+00 -2.3421E+00 2.7789E+00 A14 = 8.Π14Ε-02 -1.4520E-01 1.5401 E-01 9.7944E-01 -7.9853E+00 A16 = -1.9312E+00 Surface 7 8 9 10 11 18 201237455 k = -7.2256E-01 -2.1607E+00 -8.9597E-01 -4.7903E+00 - 3.1116E+00 A4 = 2.0621E-01 -1.3167E-01 6.2449E-01 -2.4986E-01 -2.1130E-01 A6 = 5.9999E-02 -7.1336E-02 -5.8496E-01 1.3591E-02 8.7908 E-02 A8 = -3.6809E-01 1.0755E+00 3.1512E-01 1.4815E-02 -3.1716E-02 A10 = -4.9927E-02 -1.8725E+00 2.2640E-01 3.7187E-02 9.0786E- 03 A12 = 1.7225E+00 1.0560E+00 -1.5103E-01 -1.9278E-02 -5.7992E-03 A14 = -1.5303E+00 1.8386E+00 -3.5801E-02 -3.181 IE-03 2.0718E- 03 A16 = -1.8122E+00 1.1147E-01 3.0885E-03 In the second embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, ECT, Td, R3, R5, R6, R7, R8, R9, RIO, fl, Ο, f4, f5, EPD and The definition of Yc52 is the same as that of the first embodiment, and will not be described herein. The following data can be derived by compiling Table 3: Second Embodiment f (mm) 2.00 R7/R6 0.68 Fno 1.95 |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+R10) 0.37 HFOV (degrees) 36.6 R9/f 0.36 (V2+V4)/2 21.40 β/fl 0.24 T12/CT2 0.68 f4/f5 0.37 CT5/CT4 1.31 (f/fl-fi^f5)/(f/G) 0.38 ZCT/Td 0.76 f/EPD 1.95 mi3 1.53 Yc52/CT3 1.59 (R5+R6)/(R5-R6) 1.04 &lt;Third Embodiment&gt; Referring to Figures 5 and 6, FIG. 5 is a schematic view showing a pickup optical lens system according to a third embodiment of the present invention, and FIG. 6 is directed from left to right. It is a spherical aberration, astigmatism, and distortion curve of the pickup optical lens system of the third embodiment. As can be seen from FIG. 5, the optical pickup lens system of the third embodiment sequentially includes the first lens 31A, the aperture 300, the second lens 320, the third lens 330, the fourth lens 340, and the first from the object side to the image side. Five lenses 350, 19 201237455 Infrared filter 370 and imaging surface 36〇. The first lens 310 has a positive refractive power. The object side surface 311 and the image side surface 312 are both convex and aspherical, and the first lens 310 is made of plastic. • The second lens 320 has a negative refractive power 'the object side surface 321 is a convex surface, the image side surface 322 is a concave surface, and the image side surface 322 of the second lens 320 is turned from a concave surface to a convex surface from the near optical axis toward the periphery. . The object side surface 321 and the image side surface 322 of the second lens 32 are all aspherical and the second lens 320 is made of a plastic material. The third lens 330 has a positive refractive power, and both the object side surface 331 and the image side surface 332 are convex surfaces and are all aspherical, and the third lens 330 is made of plastic material. The fourth lens 340 has a negative refractive power. The object side surface 341 is a concave surface, the image side surface 342 is a convex surface, and both are aspherical surfaces, and the fourth lens 340 is made of a plastic material. The fifth lens 350 has a negative refractive power, the object side surface 351 is a convex surface, the image side surface 352 is a concave surface ′, and the object side surface 351 of the fifth lens 350 is from the near optical axis toward the periphery, and the convex surface is turned into a concave surface. The image side surface 352 of the five lens 350 has an inflection point. The object side surface 351 of the fifth lens 350 and the image side surface 352 are all aspherical, and the fifth lens 350 is made of a plastic material. The material of the infrared filter 370 is glass, which is disposed between the fifth lens 350 and the imaging surface 360, and does not affect the focal length of the optical lens system. Please refer to Table 5 and Table 6 below. Table 5, the third embodiment 201237455 flf focal length) = 2.05 mm, Fn〇r aperture value 1.80, HFQV (bump angle) = 35.8 Tang surface curvature radius thickness material refractive index dispersion coefficient focal length 0 object plane infinite 1 first lens 2.188 (ASP) 0.339 Plastic 1.544 55.9 3.66 2 21.053 (ASP) -0.035 3 Aperture plane 0.188 4 Second lens 1.339 (ASP) 0.220 Plastic 1.621 24.4 -5.79 5 0.915 (ASP) 0.146 _6 Third lens 5.586 (ASP) 0.622 Plastic 1.535 56.3 1.25 7 -0.732 (ASP) 0.101 8 ----- Fourth lens -0.438 (ASP) 0.241 Plastic 1.607 26.6 -3.12 9 -0.689 (ASP) 0.088 10 -----^ Fifth lens 0.869 (ASP ) 0.431 Plastic 1.535 56.3 -13.91 η ------ A _ 0.643 (ASP) 0.400 12 ----- k External line filter Deguang film plane 0.150 Glass 1.517 64.2 - 13 1 ——____ Plane 0.299 14 -- -- a _ imaging plane - ^ ^ ^ (d-line) is 587.6 nm Table VI, aspheric coefficient ----- surface 1 2 4 5 6 k = -1.8102E+00 0.0000E+00 -1.5440 E+01 -4.7847E+00 -1.3715E+01 A4 = ———__ -8.4685E-02 -6.3913E-01 - 7.7289E-01 -6.3632E-01 -1.4069E-01 A6 = — 5.9734E-02 1.1893E+00 -2.2143E-01 2.7649E-01 -9.3371E-02 A8 = —--— -1.3787E+00 -1.2227E+00 2.9409E+00 7.6883E-01 -4.7246E-01 3.6289E+00 -4.1474E+00 -7.0440E+00 -1.8721E+00 7.861 IE-01 A12 = ----- -5.9832 E+00 6.6457E+00 1.1602E+00 -2.4339E+00 2.6934E+00 Al4 = —*~~~ 3.7713E-01 -2.0735E-03 1.9137E-01 9.303 IE-01 -8.0614E+00 Al6 == ~~~---_ -2.0434E+00 Surface—-_ 7 8 9 10 11 k = ---- •6.823 IE-01 -2.6464E+00 -9.4681E-01 -8.0925E+00 -4.0782E+00 A4 = ^ 1.5731E-01 -8.3120E-02 6.5856E-01 -4.3133E-01 -2.7249E-01 A6 = __ 6.8725E-02 -4.0543E-03 -6.6195E-01 1.5008E -01 1.5667E-01 A8 — —-----1 —3.4137E-01 9.8545E-01 4.1539E-01 -1.7635E-02 -6.6004E-02 Al〇= -1.5004E-01 -1.9948E+ 00 3.0094E-01 -1.8826E-02 -6.6467E-03 21 201237455 A12 = 1.6964E+00 1.0330E+00 -2.7831E-01 -2.1896E-02 1.0562E-02 A14 = -1.5379E+00 1.8927E +00 -1.4750E-01 2.6422E-02 -1.2984E-03 A16 ~ -1.6945E+00 3.1661E-01 6.7671E-03 In the third embodiment, the aspheric The representation of the graph equation as in the first embodiment of the embodiment. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, ICT, Td, R3, R5, R6, R7, R8, R9, RIO, fl, f3, Han, f5, EPD and The definition of Yc52 is the same as that of the first embodiment, and will not be described herein. The following data can be derived in conjunction with Table 5: Third Embodiment f (mm) 2.05 R7/R6 0.60 Fno 1.80 |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+Rl 0 ) 0.37 HFOV (degrees) 35.8 R9/f 0.42 (V2+V4)/2 25.50 β/fl 0.34 T12/CT2 0.70 f4/f5 0.22 CT5/CT4 1.79 0.43 ZCT/Td 0.79 D 1.80 f/R3 1.53 Yc52/CT3 1.50 (R5+R6)/(R5-R6) 0.77 <Fourth Embodiment> Referring to FIGS. 7 and 8, FIG. 7 is a view showing an optical pickup lens system according to a fourth embodiment of the present invention. FIG. 8 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the fourth embodiment. As can be seen from FIG. 7, the pickup optical lens system of the fourth embodiment sequentially includes the first lens 410, the aperture 400, the second lens 420, the third lens 430, the fourth lens 440, and the fifth from the object side to the image side. The lens 450, the infrared filter filter 470, and the imaging surface 460. The first lens 410 has a positive refractive power, and the object side surface 411 is a convex surface, the image side surface 412 is a concave surface, and both are aspherical surfaces, and the first lens 41 is 22 201237455 plastic material. The second lens 420 has a positive refractive power, the object side surface 421 is a convex surface, and the image side surface 422 is a concave surface, and the image side surface 422 of the second lens 420 is turned from a concave surface to a convex surface from the near optical axis toward the periphery. The object side surface 421 and the image side surface 422 of the second lens 420 are all aspherical, and the first lens 420 is made of a plastic material. The third lens 430 has a positive refractive power. The object side surface 431 and the image side surface 432 are both convex and aspherical, and the third lens 43 is made of a plastic material. The fourth lens 440 has a negative refractive power, and the object side surface 441 is a concave surface, the image side surface 442 is a convex surface, and both are aspherical surfaces, and the fourth lens 440 is made of a plastic material. The fifth lens 450 has a negative refractive power, the object side surface 451 is a convex surface, and the image side surface 452 is a concave surface, and the object side surface 451 of the fifth lens 450 is turned from the convex axis to the periphery from the near optical axis, and the convex surface is concave. The image side surface 452 of the five lens 450 has an inflection point. The object side surface 451 and the image side surface 452 of the fifth lens 450 are all aspherical, and the fifth lens 450 is made of a plastic material. The material of the infrared filter 470 is glass, which is disposed between the fifth lens 450 and the imaging surface 460, and does not affect the focal length of the optical lens system. Please refer to Table 7 and Table 8 below. Table 7, fourth embodiment f (focal length) = 1.98 mm, Fno (iLiLft) = 1.70 · HFOVY car accident angle) a 36 7 household 1 surface curvature radius thickness material refractive index dispersion coefficient focal length 0 object plane infinite 23 201237455 1 First lens 1.949 (ASP) 0.362 Plastic wins 1.544 55.9 6.37 2 3.276 (ASP) 0.022 3 Aperture plane 0.087 4 Second lens 1.061 (ASP) 0.220 Plastic 1.640 23.3 30.80 5 1.031 (ASP) 0.156 6 Third lens 33.302 (ASP) 0.659 Plastic 1.544 55.9 1.12 7 -0.614 (ASP) 0.057 8 Fourth lens -0.428 (ASP) 0.324 Plastic 1.640 23.3 -2.45 9 -0.763 (ASP) 0.063 10 Fifth lens 0.774 (ASP) 0.400 Plastic 1.535 56.3 - 37.32 11 0.611 (ASP) 0.500 12 Infrared filter filter plane 0.150 Glass 1.517 64.2 - 13 Plane 0.244 14 Imaging plane - reference wavelength (d-line) is 587.6nm Table 8. Aspherical surface 1 2 4 5 6 k = 1.1642E+00 -1.8746E+01 -9.1517E+00 -2.5144E+00 -1.0000E+00 A4 = -3.7894E-02 -7.9270E-01 -6.4666E-01 -7.7576E-01 -1.9471 E-01 A6 = 2.5211E-01 2.34 30E+00 -6.403 IE-01 -2.1794E-01 -1.6036E-01 A8 = -1.4427E+00 -3.9239E+00 2.0725E+00 9.5646E-01 -1.2069E+00 A10 = 4.3955E+00 - 1.9397E+00 -7.7988E+00 -8.8081E-01 2.8182E+00 A12 = -6.0522E+00 6.5976E+00 1.0850E+00 -2.3421E+00 2.7789E+00 A14 = 8.1112E-02 -1.4520 E-01 1.5401E-01 9.7944E-01 -7.9853E+00 A16 = -1.9312E+00 Surface 7 8 9 10 11 k = -7.5294E-01 -2.4188E+00 -8.1257E-01 -5.2411E+ 00 -3.4847E+00 A4 = 2.5035E-01 -1.4215E-01 5.8956E-01 -2.5470E-01 -2.2366E-01 A6 = 7.0897E-02 -6.755 IE-02 -5.9614E-01 7.8537E- 03 1.0360E-01 A8 = -4.8442E-01 1.0959E+00 3.6856E-01 2.3201E-02 -5.1852E-02 A10 = -6.4993E-02 -1.8087E+00 2.7204E-01 4.1871E-02 1.4131 E-02 A12- 2.1259E+00 1.1813E+00 -1.5575E-01 -1.8492E-02 -2.5508E-03 A14 = -1.5303E+00 1.8265E+00 -1.0132E-01 -3.1420E-03 6.6838 E-04 A16 = -1.9756E+00 1.5568E-01 1.9433E-03 In the fourth embodiment, the aspherical curve equation represents the form of the first embodiment 24 201237455. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, XCT, Td, R3, R5, R6, R7, R8, R9, RIO, fl, O, f4, f5, EPD and The definition of Yc52 is the same as that of the first embodiment, and will not be described herein. __35 combined with Table 7 can calculate the following data: Fourth Embodiment f (mm) 1.98 R7/R6 0.70 Fno 1.70 | (R7-R8) / (R7 + R8) | + | (R9-R10) / (R9 + Rl 0)| 0.40 HFOV (degrees) 36.7 R9/f 0.39 (V2+V4)/2 23.30 β/fl 0.18 T12/CT2 0.50 f4/f5 0.07 CT5/CT4 1.23 Division - £T5) / Network 0.21 ICT/Td 0.84 fi ^EPD 1.70 f/R3 1.86 Yc52/CT3 1.54 (R5+R6)/(R5-R6) 0.96 &lt;Fifth Embodiment&gt; Referring to FIG. 9 and FIG. 10, FIG. 9 is a schematic view showing a pickup optical lens system according to a fifth embodiment of the present invention, and FIG. 10 is directed from left to right. It is a spherical aberration, astigmatism, and distortion curve of the pickup optical lens system of the fifth embodiment. As can be seen from FIG. 9, in the pickup optics of the fifth embodiment, the lens system sequentially includes the aperture 500, the first lens 51A, the second lens 520', the third lens 530, and the fourth lens 540 from the object side to the image side. The fifth lens 550, the infrared filter filter 570, and the imaging surface 560. The first lens 510 has a positive refractive power, and the object side surface 511 is a convex surface, the image side surface 512 is a concave surface, and both are aspherical surfaces, and the first lens 51 is made of a plastic material. The second lens 520 has a negative refractive power, the object side surface 521 is a convex surface, and the image side surface 522 is a concave surface, and the image side surface 522 of the second lens 520 is turned from a concave surface to a convex surface from the near-optical axis of the 201237455. The object side surface 521 and the image side surface 522 of the second lens 520 are all aspherical, and the second lens 520 is made of a plastic material. The third lens 530 has a positive refractive power, and both the object side surface 531 and the image side surface 532 are convex and aspherical, and the third lens 530 is made of plastic. The fourth lens 540 has a negative refractive power, and the object side surface 541 is a concave surface, the image side surface 542 is a convex surface, and both are aspherical surfaces, and the fourth lens 54 is made of a plastic material. The fifth lens 550 has a negative refractive power, the object side surface 551 is a convex surface, the image side surface 552 is a concave surface, and the object side surface 551 of the fifth lens 550 is turned from the convex axis to the periphery from the near optical axis, and the convex surface is concave. The image side surface 552 of the five lens 550 has an inflection point. The object side surface 551 and the image side surface 552 of the fifth lens 550 are all aspherical, and the fifth lens 550 is made of a plastic material. The material of the infrared filter 570 is glass, which is disposed between the fifth lens 550 and the imaging surface 560, and does not affect the focal length of the optical lens system. Please refer to the following list IX and Table 10. _ __ Table IX, Fifth Embodiment 11 歪 1 = 2_.27 mm. Fnd#·圈 value)=2.20, HFOV (Feng Vision...=m $ Surface Curvature Radius Thickness Material Refractive Index Dispersion Coefficient Focal Length 0 Subject Plane infinity __一·. 一---- 1 Aperture plane -0.115 ......— 2 First lens 1.128 (ASP) 0.310 Plastic 1.544 55.9 ~~2.97 —---. 3 2.135 (ASP) 0.173 4 Second lens 1.627 (ASP) 0.220 Plastic 1.634 23.8 --- -3.15 ~~----^ 5 0.849 (ASP) 0.056 -.-1 ------ 26 201237455 6 Third lens 2.192 (ASP) 0.545 Plastic 1.544 55.9 1.30 7 -0.953 (ASP) 0.204 8 Fourth lens -0.448 (ASP) 0.269 Plastic 1.544 55.9 -4.66 9 -0.659 (ASP) 0.038 10 Fifth lens 0.838 (ASP) 0.378 Plastic 1.530 55.8 -20.55 11 0.657 (ASP) 0.400 12 Infrared filter lighter plane 0.300 Glass 1.517 64.2 - 13 Plane 0.334 14 Imaging plane - Reference wavelength (d-line) is 587.6nm Table 10, aspherical surface 2 3 4 5 6 k = - 1.8519E-01 -2.5382E+01 -2.7256E+01 -5.2383E+00 -1.1801E+01 A4 = -5.0087E-04 -7.9953E-02 -9 .3106E-01 -7.3957E-01 -1.8012E-01 A6 = 6.0828E-01 2.4670E-01 -3.3339E-01 4.3517E-01 -4.4315E-01 A8 = -1.7697E+00 7.6747E-01 1.6954 E+00 -2.9820E-01 6.1118E-02 A10 = 3.4368E+00 -6.0510E+00 -5.2558E+00 -1.2683E+00 1.3638E+00 A12 = -9.1654E-01 6.4154E+00 -6.0982 E+00 -2.4740E+00 1.2264E+00 A14 = -5.0795E-01 -2.0671E-01 2.8639E-02 5.5951E+00 -1.7114E+00 A16 = -1.6660E+00 Surface 7 8 9 10 11 k = -3.5884E-02 -2.6015E+00 -8.3984E-01 -6.7867E+00 -4.3335E+00 A4 = -2.2399E-01 -4.3943E-01 6.0659E-01 -5.1464E-01 -3.2566 E-01 A6 = 4.0456E-01 -5.5463E-01 -8.1358E-01 9.8498E-02 1.5042E-01 A8 = -7.9709E-01 1.8471E+00 3.1289E-01 -1.2423E-01 -5.8880E -02 A10 = 1.0187E+00 -9.0437E-01 6.7970E-01 1.7990E-02 8.0608E-03 A12 = 4.0630E+00 1.7734E+00 1.3360E-01 1.1649E-01 2.9196E-03 -2.9210E -05 A14 = -1.7059E+00 2.5663E+00 -2.0977E-01 1-7476E-01 A16 = -4.5309E+00 1.5293E-01 -1.4170E-01 In the fifth embodiment, the aspheric curve equation The form as the first embodiment is shown. Further, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, ΣΟΓ, Td, R3, R5, R6, R7, R8, R9, RIO, fl, f3, f4, f5, The definitions of EPD and Yc52 are the same as those of the first embodiment of 2012 20125555, and are not described here. The following data can be derived in conjunction with Table 9: '-........- - .............---- Fifth Embodiment f (mm) 2.27 R7/R6 0.47 Fno 2.20 |(R7,R8)/(R7+R8)|+|(R9-R10)/(R9+Rl 0)| 0.31 HFOV (degrees) 33.1 R9/f 0.37 (V2+V4)/2 39.85 O /fl 0.33 T12/CT2 0.79 f4/f5 0.23 CT5/CT4 1.41 0.39 ICT/Td 0.79 ί/ΕΡΌ 2.20 f/R3 1.40 Yc52/CT3 1.53 (R5+R6)/(R5-R6) 0.39 &lt;Sixth Embodiment&gt; Referring to FIG. 11 and FIG. 12, FIG. 11 is a schematic view showing a pickup optical lens system according to a sixth embodiment of the present invention, and FIG. 12 is directed from left to right. It is a spherical aberration, astigmatism, and distortion curve of the pickup optical lens system of the sixth embodiment. As can be seen from FIG. 11, the optical pickup lens system of the sixth embodiment sequentially includes the aperture 600, the first lens 610, the second lens 620, the third lens 630, the fourth lens 640, and the fifth from the object side to the image side. The lens 650, the infrared filter filter 670, and the imaging surface 660. The first lens 610 has a positive refractive power, the object side surface 611 is a convex surface, the image side surface 612 is a concave surface, and both are aspherical, and the first lens 610 is made of a plastic material. The second lens 620 has a negative refractive power, the object side surface 621 is a convex surface, the image side surface 622 is a concave surface, and the image side surface 622 of the second lens 620 is turned from a concave surface to a convex surface from the near optical axis toward the periphery. The object side surface 621 and the image side surface 622 of the second lens 620 are all aspherical, and the second lens 620 is made of a plastic material. 28 201237455 The third lens 630 has a positive refractive power, the object side surface 631 is a concave surface, the image side surface 632 is a convex surface and both are aspherical, and the third lens 630 is made of a plastic material. The fourth lens 640 has a negative refractive power, and the object side surface 641 is a concave surface, the image side surface 642 is a convex surface, and both are aspherical surfaces, and the fourth lens 640 is made of a plastic material. The fifth lens 650 has a negative refractive power, the object side surface 651 is a convex surface, the image side surface 652 is a concave surface, and the object side surface 651 of the fifth lens 65 朝 is turned from the convex surface to the concave surface from the near optical axis toward the periphery. The image side surface 052 of the fifth lens 650 has an inflection point. The object side surface 651 and the image side surface 652 of the fifth lens 65 are all aspherical, and the fifth lens 65 is made of a plastic material. The material of the infrared eliminator filter 670 is glass, which is disposed between the fifth lens 650 and the imaging surface 660, and does not affect the focal length of the optical lens system. Please refer to the following list 11 ♦ eleven 〇 table eleventh, sixth embodiment fL focal length) = 2. illusion mm, Fno (光光羞} two 2^8, pjpovf 枧 疳 疳 疳 surface curvature radius thickness material Refractive index dispersion coefficient focal length 0 The aperture of the object is infinite~----- -0.138 -------- ----- 2 First lens 1.104 (ASP) &quot;----- 0.364 Plastic 1.535 1 04 3 3.045 (ASP) 0.104 j\j tj J « U 1 4 Second lens 2.239 (ASP) 0.220 Plastic 1.634 23.8 -6.47 5 1.393 (ASP) 0.137 6 Third lens - 13.277 (ASP) 0.459 Plastic 1.535~ 56.3 1.74 7 -0.880 (ASP) 0.166 8 Fourth lens -0.477 (ASP) 0.240 Plastic 1.614 25.6 -5.88 9 -0.654 (ASP) --- 0.031 ~〇J2〇~~ 10 five lenses 0.824 (ASP) Plastic 1.535 56.3 -11.69 29 201237455 11 0.629 (ASP) 0.400 12 Infrared filter filter plane 0.300 Glass 1.517 64.2 - 13 Plane 0.383 14 Imaging plane - reference wavelength (d-line) is 587·6 nm Table 12, aspherical Coefficient surface 2 3 4 5 6 k = -9.5220E-02 -7.6454E+01 -3.6170E+01 -3.2324E+00 -9.0000E+01 A4 = 1.6757E-02 -1.7299E-01 -8.9992E-01 -7.7072E-01 -1.5682E-01 A6 = 5.8194E-01 1.6672E-01 -3.0767E-01 3.9234E-01 -4.6353E-01 A8 = -1.7628E+00 6.9807E-01 1.5570E+00 -2.7935E-01 -5.7721E-05 A10 = 3.6383E+00 -5.8876E+00 -6.6527E+00 -1.0855E+00 1.2118E+00 A12 = -9.2056E-01 4.3154E+00 -3.9434E+00 -2.241 IE. 00 1.0797E+00 A14 = -3.7861E-01 -4.2399E+00 2.0224E+00 5.6100E+00 -1.9151E+00 A16 = -8.7456E-01 Surface 7 8 9 10 11 k = -1.1168E-01 -2.6130E+00 -8.4914E-01 -7.4712E+00 -4.6025E+00 A4 = -1.8683E-01 -4.0075E -01 6.2296E-01 -5.0002E-01 -3.4424E-01 A6 = 4.3304E-01 -5.3401E-01 -8.3557E-01 1.0264E-01 1.4975E-01 A8 = -7.8460E-01 1.8219E+ 00 3.2282E-01 -1.2139E-01 -6.5869E-02 A10 = 9.8774E-01 -9.8102E-01 7.1473E-01 1-7179E-02 7.9187E-03 A12 = 4.1051E+00 1.6627E+00 1.6955 E-01 Π464Ε-01 3.9141E-03 A14 = -1.5666E+00 2.4086E+00 -1.8946E-01 1-7433E-01 6.8404E-04 A16 = -4.7366E+00 1.4139E-01 -1.4391E- 01. The 'spherical curve equation' in the sixth embodiment represents the shape as in the first embodiment. . In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, Σ (3Τ, Td, R3, R5, R6, R7, R8, R9, RIO, fl, Ο, f4, f5, The definitions of EPD and Yc52 are the same as those of the first embodiment, 'will not be repeated here. I. The following data can be calculated in conjunction with Table 11: _ Sixth Embodiment 30 201237455 f (mm) 2.25 R7/R6 0.54 Fno 2.08 | (R7 -R8)/(R7+R8)|+|(R9-R10)/(R9+Rl 0)| 〇29~ HFOV(degrees) 33.1 R9/f 0.37 (V2+V4)/2 24.70 G/fl 0.57 T12 /CT2 0.47 f4/f5 __11111*—1 _ 0.50 CT5/CT4 1.33 (f/n-^f5)/(f/G) 0.72—ECT/Td 0.79 f/EPD 2.08~~ m.3 1.01 Yc52/CT3 1.7 Factory (R5+R6)/(R5-R6) 1.14 '— &lt;Seventh Embodiment&gt; Referring to FIG. 13 and FIG. 14, FIG. 13 is a schematic view showing a pickup optical lens system according to a seventh embodiment of the present invention, and FIG. 14 is directed from left to right. It is a spherical aberration, astigmatism, and distortion curve of the pickup optical lens system of the seventh embodiment. As can be seen from FIG. 13, the optical pickup lens system of the seventh embodiment sequentially includes the aperture 700, the first lens 710, the second lens 720, the third lens 730, the fourth lens 740, and the fifth from the object side to the image side. A lens 750, an infrared filter filter 770, and an imaging surface 760. The first lens 710 has a positive refractive power, and both the object side surface 711 and the image side surface 712 are convex and are aspherical and the first lens is made of plastic. The second lens 720 has a negative refractive power 'the object side surface 721 is a convex surface, the image side surface 722 is a concave surface', and the image side surface 722 of the second lens 72 is curved from a concave surface to a convex surface from the near optical axis toward the periphery. The object side surface 721 and the image side surface 722 of the second lens 720 are both aspherical and the first lens 720 is made of a plastic material. The second lens 730 has a positive refractive power, and both the object side surface 731 and the image side surface 732 are convex and are aspherical and the third lens 730 is made of plastic. 31 201237455 The fourth lens 740 has a negative refractive power, the object side surface 741 is a concave surface, the image side surface 742 is a convex surface ‘and both are aspherical surfaces, and the fourth lens 740 is made of a plastic material. The fifth lens 750 has a negative refractive power, the object side surface 751 is a convex surface, the image side surface 752 is a concave surface ', and the object side surface 751 of the fifth lens 750 is turned from a convex surface to a concave surface from the near optical axis toward the periphery. The image side surface 752 of the five lens 750 has an inflection point. The object side surface 751 and the image side surface 752 of the fifth lens 750 are all aspherical, and the fifth lens 750 is made of a plastic material. The material of the infrared filter 770 is glass, which is disposed between the fifth lens 750 and the imaging surface 760' and does not affect the focal length of the optical lens system. Refer to Table 13 and Table 14 below for the allocation. Table 13 and the seventh embodiment are axe sweat) = 2.19 mm, Fno (aperture value) = 2.08. HFOV (bright angle of view) = 34.7 Tang surface curvature radius thickness material refractive index dispersion coefficient focal length 0 object plane infinite 1 aperture Plane -0.090 2 First lens 1.447 (ASP) 0.357 Plastic 1.535 56.3 2.58 3 4 -26.316 (ASP) 0.109 Second lens 6.729 (ASP) 0.250 Plastic 1.614 25.6 -2.05 5 1.045 (ASP) 0.060 6 Third lens 2.840 (ASP 0.537 Plastic 1.535 56.3 1.35 7 -0.900 (ASP) 0.171 8 Fourth Selective Mirror -0.468 (ASP) 0.241 Plastic 1.614 25.6 -6.43 9 ^ »——-- -0.634 (ASP) 0.032 1〇 Fifth Through 0.799 (ASP) 0.370 Plastic 1.535 56.3 -19.89 11 12 13 一·· - 14 ^____-^ .一··—Infrared filtering filter 0.623 (ASP) 0.400 Plane 0.300 Glass 1.517 64.2 - Imaging surface _ Plane 0.429 Plane -- --- --- 32 201237455 Reference wavelength (d_line) is 587.6nm Table XIV, aspherical surface 2 3 4 5 6 k = 1.1021E-01 -9.0000E+01 -4.8568E+01 -2.1904E+00 5.7043E+ 00 A4 = 3.6833E-02 -1.0305E-01 -8.8163E-01 -7.4407E-01 -1.7243E-01 A6 = 5.0913E-01 1.3705E-01 -1.2500E-01 3.9432E-01 -5.1524E-01 A8 = -1.9430E+00 7.0195E-01 1.7621E+00 -2.9107E-01 -7.0832E-02 A10 = 3.4920E+00 -5.6825E+00 -7.0049E+00 -1.1670E+00 1.1744E+00 A12 = -1.5607E+00 3.3528E+00 -3.7523E+00 -2.3821E+00 1.1980E+00 A14 = -3.5086E+00 -6.5696E+00 4.2349E+00 5.1589E+00 -1.4884E+00 A16 = -2.868 IE-01 Surface 7 8 9 10 11 k = -1.2467E-01 -2.7527E+00 -8.4552E-01 -7.2524E+00 -4.5750E+00 A4 = -1.7951E-01 -3.763 IE-01 6.1704E-01 -4.9839E-01 -3.4587E-01 A6 = 4.3087E-01 -5.3372E-01 -8.3217E-01 1.0199E-01 1.4597E-01 A8 = -7.8743E-01 1.8061E+00 3.3777E-01 -1.2269E-01 - 6.3127E-02 A10 = 9.6648E-01 -9.2855E-01 7.3913E-01 1.5334E-02 8.3734E-03 A12 = 4.0340E+00 1.9400E+00 1.991 IE-01 1.1201E-01 4.1054E-03 A14 = -1.4727E+00 2.4790E+00 -1.5818E-01 1.7656E-01 7.7480E-04 A16 = -4.9393E+00 1.7033E-01 -1.4259E-01 In the seventh embodiment, the aspheric curve equation The form as the first embodiment is shown. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, ICT, Td, R3, R5, R6, R7, R8, R9, RIO, fl, f3, f4, f5, EPD and The definition of Yc52 is the same as that of the first embodiment, and will not be described herein. The following data can be derived in conjunction with Table XIII: Seventh Embodiment f (mm) 2.19 R7/R6 0.52 Fno 2.08 |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+Rl 0)| 0.27 hfov m 34.7 R9/f 0.36 (V2+V4)/2 25.60 β/fl 0.52 T12/CT2 0.44 f4/f5 0.32 33 201237455 CT5/CT4 1.54 Division - Fat) / (Fat) 0.59 ECT/Td 0.83 f/EPD 2.08 f/R3 0.33 Yc52/CT3 1.46 (R5+R6)/(R5-R6) 0.52 &lt;Eighth Embodiment&gt; Referring to Figure 15 and Figure 16, FIG. 15 is a schematic view of a pickup optical lens system according to an eighth embodiment of the present invention. Figure 16 is directed from left to right. It is a spherical aberration, astigmatism, and distortion curve of the pickup optical lens system of the eighth embodiment. As can be seen from FIG. 15, the optical pickup lens system of the eighth embodiment sequentially includes the aperture 800, the first lens 810, the second lens 820, the third lens 830, the fourth lens 840, and the fifth from the object side to the image side. A lens 850, an infrared filter filter 870, and an imaging surface 860. The first lens 810 has a positive refractive power, the object side surface 811 is a convex surface, the image side surface 812 is a concave surface, and both are aspherical, and the first lens 810 is made of glass. The first lens 820 has a negative refractive power, the object side surface 821 is a convex surface, the image side surface 822 is a concave surface, and the image side surface 822 of the second lens 820 is turned from a concave surface to a convex surface from the low beam. The object side surface 821 and the image side surface 822 of the second lens 820 are all aspherical, and the second lens 820 is made of a plastic material. The third lens 830 has a positive refractive power, and both the object side surface 831 and the image side surface 832 are convex surfaces and are all aspherical, and the third lens 830 is made of plastic material. The fourth lens 840 has a negative refractive power, and the object side surface 841 is a concave surface, the image side surface 842 is a convex surface, and both are aspherical surfaces, and the fourth lens 840 is made of a plastic material. 34 201237455 The fifth lens 850 has a negative refractive power, the object side surface 851 is a convex surface, the image side surface 852 is a concave surface, and the object side surface 851 of the fifth lens 850 is turned from the convex surface to the concave surface from the near optical axis toward the periphery. The image side surface 852 of the fifth lens 850 has an inflection point. The object side surface 851 and the image side surface 852 of the fifth lens 850 are all aspherical, and the fifth lens 850 is made of a plastic material. The material of the infrared filter 870 is glass, which is disposed between the fifth lens 850 and the imaging surface 860, and does not affect the focal length of the optical lens system. Refer to Table 15 and Table 16 below. Table 15 and the eighth embodiment _ - one by one 2.20 mm. Fnoi #. 图佶, ―2.00. HFOVi本葙.&amp;, - 33.9j -- _______ Surface curvature radius thickness material refractive index dispersion coefficient focal length --- -- 0 Subject plane infinite 1 Aperture plane-0,133 2 First lens 1.142 (ASP) 0.342 Glass 1.603 42.5 3.47 ----- 3 2.232 (ASP) 0.105 —--- 4 Second lens 2.191 (ASP) 0.232 Plastic 1.650 21-4_____. 5 1.168 (ASP) 0.085 ________ 6 Third lens. 2.442 (ASP) 0.483 Plastic 1.535 56-3 a. 7 -1.135 (ASP) 0.218 8 Fourth lens -0.483 (ASP) 0.280 Plastic 1.614 25.6 -6.73 9 -0.668 (ASP) 0.032 — -12.45 __- 10 Fifth lens 0.873 (ASP) 0.349 Plastic 1.530 55.8 11 0.664 (ASP) 0.400 _________ 12 Infrared filter lighter plane 0.300 Glass 1.517 64.2 - 13 Plane 0.261 ----- 14 imaging plane - reference wavelength (d-line) is 587.6 nm _______-

Table XVI, aspherical coefficient 35 201237455 Surface 2 3 4 5 6 k = -2.0554E-01 -2.0109E+01 -1.8719E+01 -8.6176E-01 8.5482E+00 A4 = 7.0555E-03 -9.7472E -02 -8.1067E-01 -7.7746E-01 -1.6269E-01 A6 = 4.4681E-01 1.4952E-02 6.1061E-02 3.4526E-01 -5.8568E-01 A8- -1.6850E+00 5.0558E- 01 1.8347E+00 -1.3118E-01 -1.1846E-01 A10 = 3.6247E+00 -5.2048E+00 -8.8175E+00 4.1469E-01 1.0407E+00 A12 = -1.5178E-01 2.9802E+00 -6.7636E-01 -1.8362E+00 1.1692E+00 A14 = -7.2016E+00 -7.1960E+00 1.4339E+01 5.6871E+00 -7.3834E-01 A16 = -1.3951E+00 Surface 7 8 9 10 11 k = -2.0535E-02 -2.8049E+00 -7.5320E-01 -7.3875E+00 -4.4518E+00 A4 = -3.5609E-02 -3.0548E-01 5.6519E-01 -5.4482E-01 -3.2314E-01 A6 = 2.4850E-01 -5.4295E-01 -6.9580E-01 7.7136E-02 1.4110E-01 A8 = -8.4462E-01 1.7931E+00 4.4087E-01 -1.1528E-01 - 6.3576E-02 A10 = 6.3342E-01 -8.4408E-01 6.4118E-01 2.8179E-02 1.0014E-02 A12 = 3.0684E+00 1.8435E+00 2.622 IE-02 1.2598E-01 6.7136E-03 A14 = -2.3998E-02 2.4085E+00 -4.4910E-01 1.9310E-01 -3.1914E-03 A1 6 = -5.0153E+00 4.3316E-01 - 1.6614E-01 In the eighth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, Σ (: Τ, Td, R3, R5, R6, R7, R8, R9, RIO, Π, f3, f4, f5 The definitions of EPD and Ec52 are the same as those in the first embodiment, and will not be described here. The following data can be derived by coordinating Table 15: Eighth embodiment f(mm) 2.20 R7/R6 0.43 Fno 2.00 |(R7-R8 )/(R7+R8)|+|(R9-R10)/(R9+Rl 0)| 0.30 HFOV (degrees) 33.9 R9/f 0.40 (V2+V4)/2 23.50 f3/fl 0.44 T12/CT2 0.45 f4 /f5 0.54 CT5/CT4 1.25 (f/fl-qing (f/f3) 0.56 ECT/Td 0.79 D 2.00 f/R3 1.01 Yc52/CT3 1.69 (R5+R6)/(R5-R6) 0.37 36 201237455 &lt; Nine Embodiments Referring to FIG. 17 and FIG. 18, FIG. 17 is a schematic view showing a pickup optical lens system according to a ninth embodiment of the present invention, and FIG. 18 is ninth from left to right. The spherical aberration, astigmatism and distortion curve of the optical lens system of the embodiment. As can be seen from Fig. 17, the optical lens system of the ninth embodiment sequentially includes the aperture 900 and the first lens from the object side to the image side. 910, second lens 920, third lens 930, fourth lens 940, fifth The lens 950, the infrared filter filter 970, and the imaging surface 960. The first lens 910 has a positive refractive power, the object side surface 911 is convex, the image side surface 912 is concave, and both are aspherical, and the first lens 910 The second lens 920 has a negative refractive power 'the object side surface 921 and the image side surface 922 are both concave surfaces' and the image side surface 922 of the second lens 920 is from the near optical axis toward the periphery, from the concave surface to the concave surface The object side surface 921 and the image side surface 922 of the second lens 920 are all aspherical, and the second lens 920 is made of a plastic material. The third lens 930 has a positive refractive power, and the object side surface 931 and the image side surface 932 are both The convex surface is aspherical, and the third lens mo is made of a plastic material. The fourth lens 940 has a negative refractive power, the object side surface 941 is a concave surface, the image side surface 942 is a convex surface, and both are aspherical surfaces, and The fourth lens 94Q is made of a plastic material. The fifth lens 950 has a negative refractive power, the object side surface 951 is a convex surface, the image side surface 952 is a concave surface, and the object side surface 951 of the fifth lens 950 is from the near optical axis toward the periphery. From convex to concave, fifth lens 95 Image of 0 37 201237455 Side surface 952 has an inflection point. The object side surface 951 and the image side surface 952 of the fifth lens 950 are all aspherical, and the fifth lens 950 is made of a plastic material. The material of the infrared filter 970 is glass, which is disposed between the fifth lens 950 and the imaging surface 960, and does not affect the focal length of the optical lens system. Please refer to Table 17 and Table 18 below. Table 17, the ninth embodiment of the larvae; re, = 1 89 mm, Fno (aperture value) = 2.40, HFOV (Fengshibei, = 4 sore surface curvature radius thickness material refractive index dispersion coefficient focal length 0 subject Plane Infinity 1 Aperture Plane -0.065 2 First Lens 1.057 (ASP) 0.277 Plastic 1.514 56.8 2.96 3 3.165 (ASP) 0.102 4 Second Lens -40.883 (ASP) 0.220 Plastic 1.614 25.6 -3.48 5 2.261 (ASP) 0.064 6 Third Lens 3.203 (ASP) 0.382 Plastic 1.535 56.3 1.51 7 -1.030 (ASP) 0.199 8 Fourth lens -0.485 (ASP) 0.240 Plastic 1.614 25.6 •10.82 9 -0.622 (ASP) 0.030 10 Fifth lens 0.586 (ASP) 0.240 Plastic 1.530 55.8 -17.04 11 0.473 (ASP) 0.400 12 Infrared filter lighter plane 0.300 Glass 1.517 64.2 - 13 Plane 0.343 14 Imaging plane - reference wavelength (d-line) is 587.6 nm Table 18, aspherical surface 2 3 4 5 6 1.3182E-01 -2.5381E+01 -1.9405E+01 -2.0441E+01 -7.1686E+01 A4 = 4.2012E-02 -3.5972E-02 -7.8978E-01 -8.4489E-01 -3.9244 E-01 A6 = 5.1Π3Ε-01 2.7515E- 02 8.803 IE-02 1.9961E-01 -7.2840E-01 38 201237455 A8 = -1.8422E+00 9.427 IE-01 1.6001E+00 -6.2181E-01 -2.9056E-01 A10 = 2.7855E+00 -4.2968E +00 -7.5918E+00 -1.6848E+00 8.4784E-01 A12 = -9.8802E+00 7.0708E+00 -3.3849E+00 -3.1747E+00 9.1783E-01 A14 = -1.1610E+01 1.6109E 00 -2.3903E+00 2.4239E+00 -1.7672E+00 A16 = 3.7031 E+00 Surface 7 8 9 10 11 k = -2.4659E-01 -3.0480E+00 -8.6551E-01 -6.2122E+00 -4.2500E+00 A4 = -1.2426E-01 -3.3370E-01 6.4475E-01 -4.8907E-01 -3.0487E-01 A6 - 4.926 IE-01 -4.8564E-01 -8.4627E-01 1.1022E- 01 1.3834E-01 A8 = -7.1571E-01 1.8523E+00 3.4763E-01 -1.2076E-01 -6.7214E-02 A10 = 9.5381E-01 -8.7791E-01 7.8004E-01 -7.8298E-03 5.7047E-03 A12 = 3.4176E+00 2.0027E+00 2.3063E-01 1.0663E-01 3.1044E-03 A14 = 1.2041E+00 2.5977E+00 -1.0771E-01 1.6110E-01 3.5523E-04 A16 = •4.7001 E+00 2.5044E-01 -1.2647E-01 In the ninth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, f, Fno, HFOV, V2, V4, T12, CT2, CT3, CT4, CT5, ΣΟΓ, Td, R3, R5, R6, R7, R8, R9, RIO, fl, Ο, f4, f5, EPD and The definition of Yc52 is the same as that of the first embodiment, and will not be described herein. The following data can be derived in conjunction with Table 17: Ninth Embodiment f(mm) 1.89 R7/R6 0.47 Fno 2.40 |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+Rl 0)| 0.23 HFOV (degrees) 38.4 R9/f 0.31 (V2+V4)/2 25.60 β/fl 0.51 T12/CT2 0.46 ms 0.63 CT5/CT4 1.00 (group -f/f5)/just 0.60 ZCT/Td 0.77 f /EPD 2.40 f/R3 -0.05 Yc52/CT3 2.21 (R5+R6)/(R5-R6) 0.51 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and anyone skilled in the art The various modifications and refinements may be made without departing from the spirit and scope of the invention, and the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; A schematic of a pick-up optical lens system. Fig. 2 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the first embodiment. Fig. 3 is a schematic view showing a pickup optical lens system in accordance with a second embodiment of the present invention. Fig. 4 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the pickup optical lens system of the second embodiment. Fig. 5 is a view showing a pickup optical lens system according to a third embodiment of the present invention. Fig. 6 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the third embodiment. Fig. 7 is a view showing a pickup optical lens system according to a fourth embodiment of the present invention. Fig. 8 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the fourth embodiment. Fig. 9 is a view showing a schematic view of a pickup optical lens system according to a fifth embodiment of the present invention. Figure 10 is a pick-up optical lens of the fifth embodiment from left to right.

S 40 201237455 The spherical aberration, astigmatism and distortion curves of SiS. Figure 11 is a schematic view showing an optical pickup lens system in accordance with a sixth embodiment of the present invention. Fig. 12 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the sixth embodiment. Figure 13 is a schematic view showing an optical pickup lens system in accordance with a seventh embodiment of the present invention. Fig. 14 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the seventh embodiment. Figure 15 is a schematic view showing an optical pickup lens system in accordance with an eighth embodiment of the present invention. Fig. 16 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the eighth embodiment. Figure 17 is a schematic view showing an optical pickup lens system in accordance with a ninth embodiment of the present invention. Fig. 18 is a left-to-right sequence of spherical aberration, astigmatism, and distortion of the optical pickup lens system of the ninth embodiment. Figure 19 is a schematic view showing Yc52 of the fifth lens according to the embodiment of Figure 1. Λ • [Main component symbol description] Aperture: 100, 200, 300, 400, 500, 600, 700, 800, 900 First lens · 110, 210, 310, 410, 510, 610, 710, 810, 910 Side surfaces: 111, 211, 311, 411, 511, 611, 711, 811, 41 201237455 911 Image side surface: 112, 212, 312, 912 Second lens: 120, 220, 320, * 920 - Object side surface: 121, 221, 321, 921 image side surface: 122, 222, 322, 922 third lens: 130, 230, 330, 930 object side surface: 131, 231, 331, 931 image side surface: 132, 232, 332, 932 Fourth lens: 140, 240, 340, 940 Object side surface: 141, 241, 341, 941 Image side surface: 142, 242, 342, * 942 * Fifth lens: 150, 250, 350, 950 object side surface : 151, 25 351, 951 image side surface: 152, 252, 352, 512, 612, 712, 812, 520, 620, 720, 820 ' ' 521, 621, 721 ' 821 ', 522, 622, 722, 822, 530, 630, 730, 830, 531, 631, 731, 831, 532, 632, 732, 832, '540, 640, 740, 840', 541, 641, 741, 841, , 542, 642, 742, 842, 550, 650, 750, 850, 551, 651, 75 851, 552, 652, 752, 852, 42 201237455 952 imaging surface: 160, 260, 360, 460, 560, 660, 760, 860, 960 Infrared filter: 17〇, 270, 370, 470, 570, 670, 770, 870 &gt; 970 • f: focal length of the pickup optical lens system. Fno: pick-up The aperture value of the optical lens system HFOV : half of the maximum viewing angle in the optical lens system V2 : the dispersion coefficient of the second lens V4 : the dispersion coefficient of the fourth lens T12 : the distance between the first lens and the second lens on the optical axis CT2: thickness of the second lens on the optical axis CT3: thickness of the third lens on the optical axis CT4: thickness of the fourth lens on the optical axis CT5: thickness of the fifth lens on the optical axis Σστ. The sum of the thicknesses of the fifth lens on the optical axis respectively Td: the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis. R3: the curvature of the object side surface of the second lens is half R5: The curvature of the object side surface of the third lens is half a radius R6. The curvature of the image side surface of the second lens is half pressed R7 · The curvature of the side surface of the four lens is half-pressed. R8. The curvature of the image side surface of the fourth lens is half and R9: the radius of curvature of the object side surface of the fifth lens R10: the radius of curvature of the image side surface of the fifth lens: the first lens Focal length i 〇: focal length of the third lens 43 201237455 f4 : focal length f5 of the fourth lens: focal length EPD of the fifth lens: incident pupil diameter of the optical lens system of the pickup

Yc52: on the side surface of the fifth lens image, except for the intersection with the optical axis, all the faces of the vertical optical axis of the side surface, all points of the cut surface and the image side surface, and the vertical distance between the tangent point and the optical axis 44

Claims (1)

201237455 VII. Patent application scope: 1. - Pick-up optical lens system, including from the object side to the image side: the first lens has a positive refractive power, and the object side surface is convex; the first lens has a refractive power a third lens having a positive refractive power 'the image side surface is a convex surface; a fourth lens 'having a negative refractive power, the object side surface is a concave surface, the image side surface is a convex surface, and both are aspherical surfaces; a fifth lens having a negative refractive power, wherein the object side surface is a convex surface, the image side surface is a concave surface, and both are aspherical surfaces, and the image side surface of the fifth lens has at least one inflection point; wherein the first lens The focal length is fl, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the optical lens system is f, and the object side surface of the second lens The radius of curvature is R3, which satisfies the following conditions: 0 &lt; f3/fl &lt;0.57; 0 &lt; f4/f5 &lt;1.50; and -0.5 &lt; f/R3 &lt; 3.5. 2. The optical lens system as claimed in claim 1, wherein the image side surface has a radius of curvature R6, and the fourth lens has an object side surface radius of curvature R7, which satisfies the following condition: 0 &lt; R7/R6 &lt; 〇9〇. 3. The pickup optical lens system according to claim 2, wherein a sum of thicknesses of the first lens to the fifth lens on the optical axis is 2CT, and an object side surface of the first lens to the fifth lens The distance of the image side surface on the optical axis of 45 201237455 is Td, which satisfies the following conditions: 0.70 &lt; ICT/Td &lt; 0.90. 4. The pickup optical lens system according to claim 2, wherein the fifth lens has an object side surface curvature radius of R9, and the pickup optical lens system has a focal length f' which satisfies the following condition. 0.20 &lt; R9/ f&lt;0.60. 5. The pickup optical lens system of claim 2, wherein the focal length of the optical lens system is f, and the incident pupil diameter of the optical lens system is EPD', which satisfies the following conditions: 1.2 &lt; f/ EPD S 2.2. 6. The pickup optical lens system according to claim 1, wherein the image side surface of the second lens is turned from a concave surface to a convex surface from the near-optical axis toward the periphery. 7. The optical lens system of claim 1, wherein the fourth lens has a radius of curvature of the object side surface of r7, an image side surface radius of curvature of R8, and an object side surface of the fifth lens has a radius of curvature of R9. The radius of curvature of the image side surface is R10, which satisfies the following conditions: 0.20 &lt; |(R7-R8)/(R7+R8)|+|(R9-R10)/(R9+R10)| &lt; 0.45 〇8. The optical lens system of claim 1, wherein the second lens has a dispersion coefficient of V2, and the fourth lens has a dispersion coefficient of V4, which satisfies the following condition: ~ 20 &lt; (V2+V4)/2 &lt; 30. 9. The pickup optical lens system of claim 1, wherein the image side surface of the first lens is a concave surface. 10. The optical optical lens system of claim 9, wherein the focal length of the lens of the 46 201237455 is η, and the focal length of the third lens is β Α condition: - 疋 0 0 &lt; f3 / fl &lt; 〇45. 11. The imaging optical lens system of claim 9, wherein the focal length of the optical lens system is f, the focal length of the first lens is a hit, and the focal length of the third lens is 〇, the fifth lens The focal length is f5, which is full; column condition: 0.20 &lt; (f/fl-f/f5)/(f/f3) &lt; 0.75. 12. The optical pickup lens system according to claim 9, wherein the image side surface is on the side surface of the fifth lens image, except for the intersection with the optical axis, the image side surface is perpendicular to the optical axis, the slice surface and the image side At all points of the surface, the vertical distance between the tangent point and the optical axis is Yc52, and the thickness of the third lens on the optical axis ^ CT3 's satisfies the following condition: 1.0 &lt; YC52/CT3 &lt; 3.5. 13. The optical pickup lens system according to claim 1, wherein the object side surface of the second lens is a convex surface, and the image side surface is a concave surface. 14. The pickup optical lens system according to claim 13, wherein the object side surface of the fifth lens is turned from a convex surface to a concave surface from the near-optical axis toward the periphery. 15. The optical pickup lens system of claim 13, wherein the third lens has an object side surface curvature radius R5 and an image side surface curvature radius R6, which satisfies the following condition: 0.3 &lt; (R5+R6) /(R5-R6) &lt; 1.3. 16. The pickup optical lens system of claim 1, wherein the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, which satisfies the following condition: 47 201237455 0.8 &lt; CT5/CT4 &lt; 1.8 0. The optical pickup lens system of claim 1, wherein the focal length of the lens is Π, and the focal length of the third lens is f3, which satisfies the condition: 0 &lt;; f3/fl &lt; 0.35. 18. A pick-up optical lens system 'incorporating a first lens from the object side to the image side, having a positive refractive power, the object side surface being convex; a second lens having a refractive power; a second lens a positive refractive power, the image side surface is convex. A fourth lens 'has a negative refractive power, the object side surface is four sides, the side surface is convex, and both are aspherical; and like a fifth lens, having a negative a refractive power, the object side surface is a convex surface, the side surface is a concave surface, and both are aspherical surfaces, and the image side image of the fifth lens has at least one inflection point; wherein the focal length of the first lens is fl, The focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is a line, and the radius of curvature of the image side surface of the third lens is R6, and the curvature of the object side of the fourth lens The radius is R7 'which satisfies the following conditions: 0 &lt; β / Π &lt;0.57; 0 &lt; f4 / f5 &lt; 1 · 5 〇; and 0 &lt; R7 / R6 &lt; 0.90 〇 19 · as claimed in claim 18 The image pickup optical lens system, wherein the image side surface of the first lens is a concave surface, the first The object side surface and the image side surface of the two lenses are concave. The image pickup optical lens system of claim 18, wherein the image side surface of the second lens is turned from a concave surface to a convex surface from the near optical axis, and is convex to a convex surface as described in claim 18. The image pickup optical lens system, wherein the sum of the thicknesses of the first lens to the fifth lens on the optical axis is ECT, and the image side surface of the first lens to the image side surface of the fifth lens is on the optical axis The distance is Td, which satisfies the following condition: 0.75 &lt; ECT/Td &lt; 0.85. 22. The optical lens system of claim 18, wherein the focal length of the fourth lens is f4, the fifth lens The focal length is f5, which satisfies the following condition: 0 &lt; f4/f5 &lt; 0.70. 23. The optical lens system of claim 18, wherein the focal length of the first lens is fl, and the focal length of the third lens It is β, which satisfies the following conditions: 0 &lt; Ο /fl &lt; 0.35. 24. The optical lens system of claim 18, wherein the second lens has a dispersion coefficient of V2, and the dispersion of the fourth lens The coefficient is V4, which satisfies the following conditions: 20 &lt; (V2+V4)/2 &lt The optical optical lens system of claim 18, wherein the focal length of the optical lens system is f, and the incident pupil diameter of the optical lens system is EPD, which satisfies the following conditions: 1.2 &lt; The f-optical optical lens system of claim 18, wherein the first lens and the second lens are spaced apart from each other on the optical axis by a distance T12, and the second 49 201237455 lens is in the light The thickness on the shaft is CT2, which satisfies the following conditions: 0 &lt; T12/CT2 &lt; 1.0. 50